Better grouping of data in Deep Memory Profiler

tools/deep_memory_profiler/policy.linux.browser.json

 {
   "components": [
     "second",
     "mmap-profiler",
     "mmap-type-profiler",
     "mmap-tcmalloc",
     "FROM_HERE_FOR_TOTAL",
     "mustbezero",
     "unhooked-absent",
     "unhooked-anonymous",
     "unhooked-file-exec",
     "unhooked-file-nonexec-others",
     "unhooked-file-nonexec-group",
     "unhooked-file-nonexec",
     "unhooked-stack",
     "unhooked-other",
     "no-bucket",
     "mmap-v8-heap-newspace",
     "mmap-v8-heap-coderange",
     "mmap-v8-heap-pagedspace",
     "mmap-v8-other",
     "mmap-gpu-mappedmemorymanager",
     "mmap-gpu-command-ringbuffer",
     "mmap-gpu-transfer-ringbuffer",
     "mmap-gpu-gles2-createbuffer",
     "mmap-skia-font",
+    "mmap-blink-css",
+    "mmap-blink-document",
+    "mmap-blink-layout",
     "mmap-catch-all",
+    "tc-histogram",
     "tc-glib",
-    "tc-std-bits-string",
-    "tc-std-bits-ptsynch",
     "tc-skia",
     "tc-sqlite",
     "tc-syncer",
     "tc-domstorage",
     "tc-safebrowsingdatabase",
     "tc-threadcontext",
     "tc-leveldb-readblock",
     "tc-leveldb",
     "tc-spdy-doreadloop",
     "tc-spdy",
     "tc-net-sslconnectjob",
     "tc-history-thumbnails",
     "tc-history-urlindex-privatedata",
     "tc-crlset",
     "tc-extension-host",
+    "tc-extension-catch-all",
     "tc-bookmark-codec",
+    "tc-blink-css",
     "tc-webkit-catch-all",
     "tc-v8-catch-all",
     "tc-toplevel-string",
+    "tc-std-bits-string",
+    "tc-std-bits-ptsynch",
     "tc-std-treemap",
     "tc-std-hashmap",
     "tc-std-vector",
     "tc-std-other",
     "tc-catch-all",
     "tc-unused",
     "UNTIL_HERE_FOR_TOTAL",
     "total-exclude-profiler",
     "total",
     "absent",
@@ skipping 124 matching lines @@
       "name": "mmap-gpu-gles2-createbuffer",
       "stacktrace": ".*gpu::gles2::BufferTracker::CreateBuffer.*",
       "allocator": "mmap"
     },
     {
       "name": "mmap-skia-font",
       "stacktrace": ".*SkTypeface::openStream.*",
       "allocator": "mmap"
     },
     {
+      "name": "mmap-blink-css",
+      "stacktrace": ".*WebCore::Element::createPseudo.*",
+      "allocator": "mmap"
+    },
+    {
+      "name": "mmap-blink-document",
+      "stacktrace": ".*WebCore::.*(DocumentType::Comment|Text|(HTML|SVG).*Element)::create.*",
+      "allocator": "mmap"
+    },
+    {
+      "name": "mmap-blink-layout",
+      "stacktrace": ".*WebCore::Render.*",
+      "allocator": "mmap"
+    },
+    {
       "name": "mmap-catch-all",
       "stacktrace": ".*",
       "allocator": "mmap"
     },
     {
+      "name": "tc-histogram",
+      "stacktrace": ".*([hH]istogram|UseCount).*",
+      "allocator": "malloc"
+    },
+    {
       "name": "tc-glib",
       "stacktrace": ".*(g_realloc|g_malloc.?|slab_allocator_alloc_chunk)($| .*)",
       "allocator": "malloc"
     },
     {
-      "name": "tc-std-bits-string",
-      "stacksourcefile": ".*/usr/include/.*/bits/string.*",
-      "allocator": "malloc"
-    },
-    {
-      "name": "tc-std-bits-ptsynch",
-      "stacksourcefile": "/usr/include/.*/bits/ptsynch.*",
-      "allocator": "malloc"
-    },
-    {
       "name": "tc-skia",
       "stacktrace": ".* Sk[A-Za-z_]+::.*",
       "allocator": "malloc"
     },
     {
       "name": "tc-sqlite",
       "stacktrace": ".*sqlite3Mem(Malloc|Realloc).*",
       "allocator": "malloc"
     },
     {
@@ skipping 56 matching lines @@
       "name": "tc-crlset",
       "stacktrace": ".*CRLSetFetcher::LoadFromDisk.*",
       "allocator": "malloc"
     },
     {
       "name": "tc-extension-host",
       "stacktrace": ".*extensions::ExtensionHost::ExtensionHost.*",
       "allocator": "malloc"
     },
     {
+      "name": "tc-extension-catch-all",
+      "stacktrace": ".*extensions::.*",
+      "allocator": "malloc"
+    },
+    {
       "name": "tc-bookmark-codec",
       "stacktrace": ".*BookmarkCodec::.*",
       "allocator": "malloc"
     },
     {
+      "name": "tc-blink-css",
+      "stacktrace": ".*(WTF::|WebCore::|WebKit::).*(CSS|Style|Sheet).*",
+      "allocator": "malloc"
+    },
+    {
       "name": "tc-webkit-catch-all",
       "stacktrace": ".*(WTF::|WebCore::|WebKit::).*",
       "allocator": "malloc"
     },
     {
       "name": "tc-v8-catch-all",
       "stacktrace": ".*v8::.*",
       "allocator": "malloc"
     },
     {
@@ skipping 10 matching lines @@
       "name": "tc-std-hashmap",
       "stacktrace": ".*(std::vector::reserve __gnu_cxx::hashtable|::allocate std::_Hashtable|::allocate std::__1::__hash_table).*",
       "allocator": "malloc"
     },
     {
       "name": "tc-std-vector",
       "stacktrace": ".*std::(_Vector_base::_M_allocate|__1::vector::allocate).*",
       "allocator": "malloc"
     },
     {
+      "name": "tc-std-bits-string",
+      "stacksourcefile": ".*/usr/include/.*/bits/string.*",
+      "allocator": "malloc"
+    },
+    {
+      "name": "tc-std-bits-ptsynch",
+      "stacksourcefile": "/usr/include/.*/bits/ptsynch.*",
+      "allocator": "malloc"
+    },
+    {
       "name": "tc-std-other",
       "stacktrace": ".*(__gnu_cxx::new_allocator::allocate|std::__1::allocator::allocate).*",
       "allocator": "malloc"
     },
     {
       "name": "tc-catch-all",
       "stacktrace": ".*",
       "allocator": "malloc"
     },
     {
@@ skipping 37 matching lines @@
       "allocator": "optional"
     },
     {
       "name": "other",
       "stacktrace": "optional",
       "allocator": "optional"
     }
   ],
   "version": "POLICY_DEEP_3"
 }